Hi everyone, I am interested in the military and would like to ask you about the backspacer. I have read somewhere on the web that earlier models have two barrel spacers inside the delrin. Later models have only delrin without barrels. Newest models have aluminum backspacer without barrels. He said that he removed delrin and only used the barrel spacers. He also posted his pic and it looked nicer. I want all black military with barrelspacer and delrin. Is there any way that I can tell which military have the barrel spacer? Thanks